Engine driving box



March 18, 1924. 1,486,862

A. S. BRANDQCK ENGINE DRIVING BOX Filed Dec. 21, 1925' 2 Sheets-Sheet 1 Suva-HIM:

March 18 1924." 1,486,862

A. S. BRANDOCK ENGINE DRIVING BOX Filed Dec. 21, 1923 2 Sheets-Sheet 2 tit) atented Mar. 1%, 124.

ANDREW S. BRANDOGK, PUEBLO, COLORADO.

ENGINE naivrne BOX.

Application filed December 21, 1923. Serial No; 882,018.

To all whom it may concern:

Be it known that I, ANDRE S. BRAN- noon, a citizen of the United States, residing at Pueblo, in the county of Pueblo and State of Colorado, have invented a new and useful Engine Driving Box, of which the following is a specification.

This invention relates to driving boxes for engines and the object thereof is to provide a box of this character constructed to minimize driving box pounds thereby reducing wear and tear on the machinery; to save time and labor in removing or rebrassing boxes; and to eliminate the dropping of drivers to do so.

Another object is to provide simple and eiiicient means whereby movement between the drive boxes and the frame of a locomotive engine may be taken up automatically.

With the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that chan es in the precise embodiment of the invention herein disclosed, may be made within the scope of what is claimed without departing from the spirit of the invention.

In the accompanying drawings Figure 1 represents a front elevation with parts broken out and in section of an engine driving box equipped with this improved invention.

Fig. 2 is a horizontal section taken on the line 22 of Fig. 1. i

Fig. 3 is a transverse vertical section taken on the line 3-3 of Fig. 1.

Fig. 4 is a similar view taken on the line 4-4 of Fig. 1; and

Fig. 5 is a detail side elevation of the lower portion of an engine driving box and its adjacent parts.

In the embodiment illustrated a portion of the frame of a locomotive is shown at 1 which embodies arms 2 having U-shaped wear plates 3 associated therewith.

The-driving box includes front and back sections ,4 and 5 respectively which are held together by four corner bolts and between which are located at opposite sides of the box 20 roller racks 11 having spaced rollers 11* mounted therein and which are designed to give free movement to the driving box in the frame of the locomotive. lhe roller racks 11 are arranged between wear plates 12 and .13 arranged adjacent the driving box and frame respectively as is shown clearly in Figs. 1 and 2.

The front and rear plates 4 and 5 define a chamber in which the driving box 20 is located.

A pressure plate 6 shown clearly in Figs. 2 and 3 is arranged to provide a base for two spring pressed plungers 7 housed in hollow screws 7 which are threaded through the front plate 4 and held in position by lock nuts 8. The pressure plate 6 is arranged over a wedge plate 10 which is wedge-shaped in transverse section tapering from one side edge to the other as is shown clearly in Fig. 2, the pressure plate 6 being arranged to abut with the thicker edge of said Wedge. This wedge plate 10 is located between the wear plate 13 at one side of the driving box and the tapered edge 15 of plate 3 and is designed to automatically take up lateral wear.

Coiled springs 9 are located in the housings 7 and at their outer ends against the inner wall of the hollow screw said openings exerting their tension to force the wedge plate 10 inwardly and take up wear. It will thus be seen that this transversely tapered wedge plate 10 will be advanced by the springs 9 and in this way wear will be taken up automatically throughout the entire length of the driving box.

It is of course understood that the wear plates 12 and 13 and the rollers 11* are preferably case hardened.

From the above description it will be obvious that a locomotive driving box constructed as herein shown and described and equipped with the automatic operating wedge 10 will have the driving box pounds efiiciently minimized and also will efiect a great saving in time and labor in removing or rebrassing of boxes and eliminates the dropping of drivers to do so.

I claim 1. In a device of the class described a box; a transversely tapered wedge plate, and means for mounting said plate between the box and the engine frame for edgewise transverse movement, and spring means for advancing said plate.

2. In a device of the class described a box; a transversely tapered wedge plate, means for mounting said plate between the box and an engine frame for edgewise transverse movement, a pressure plate engaging the tween said box and frame, of a wedge plate tapered transversely from one side edge to the other, wear plates located between said roller bearing and frame and between the bearings and the box, said wedge plate being located between one of the wear plates and the frame, a pressure plate engaging the wider outer edge of the wedge plate, and spring means for advancing said plates.

4. The combination with a locomotive engine frame having a driving box mounted therein with roller bearings mounted between said box and frame, of a wedge plate tapered transversely from one side edge to the other, wear plates located between said roller bearing and frame andbetween the bearings and the box, said wedge plate being located between one of the wear plates and the frame, a ressure plate enga 'ng the wider outer e go of the wedge ate, and spring means for advancing sa1d p ates, said means comprising hollow bolts threaded in the frame, with spring pressed plungers mounted in said bolts and engaged with said pressure plate.

5. The combination with a locomotive engine frame having a driving box mounted therein, with roller bearings between said box and frame; of a wedge plate tapered transversely from one side edge to the other and mounted between said bearings and frame, a shoe tapered to correspond with said wedge and engage it, and spring means for advancing the plate.

In testimony that I claim the foregoing as my own, I ha hereto affixed my signature in the presence of two witnesses.

ANDREW S. BRANDOCK.

Witnesses:

R. A. CROSSMAN, LAURA WURZEL. 

